boehmite

A Dictionary of Earth Sciences | 1999 | 527 words | Copyright

boehmite An aluminium hydrate γ-AlO(OH), boehmite forms a continuous series with its polymorph diaspore α-AlO(OH) and is a constituent of bauxite and laterite; sp. gr. 3.0; hardness 4; orthorhombic; usually white; normally occurs as microscopic grains, or pisolitic aggregates; cleavage good {010}; occurs extensively in the weathering profiles of rocks together with gibbsite, diaspore, and kaolinite. It is used for aluminium production and is named after the nineteenth-century German chemist J. B. Böhm.

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AILSA ALLABY and MICHAEL ALLABY. "boehmite." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. 9 Feb. 2012 <http://www.encyclopedia.com>.

AILSA ALLABY and MICHAEL ALLABY. "boehmite." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. (February 9, 2012). http://www.encyclopedia.com/doc/1O13-boehmite.html

AILSA ALLABY and MICHAEL ALLABY. "boehmite." A Dictionary of Earth Sciences. 1999. Retrieved February 09, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O13-boehmite.html

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